Cleaning & Disinfection, Knowledge Base

Surface Science – Disinfection and Residue Control

Posted on by Berkshire Corporation
Quiz One Topper
25
Jul

What is the most common chemical cleaner used in cleanrooms?

  • a) Isopropyl alcohol (IPA) ✅Explanation: IPA is commonly used due to its low water content, rapid evaporation, and ability to clean residues from surfaces.
  • b) Chlorine bleach
  • c) Hydrogen peroxide
  • d) Phenolics

Why is residue control critical in cleanrooms?

  • a) Prevents corrosion
  • b) Ensures compliance
  • c) Avoids product contamination ✅Explanation: Chemical residues can compromise sensitive production environments.
  • d) Reduces cost

Which chemistry is safe for most electronics?

  • a) Quaternary ammonium
  • b) IPA ✅Explanation: IPA evaporates cleanly with low residue.
  • c) Phenolics
  • d) Chlorine

Which product is best for killing bacteria with minimal corrosive impact?

  • a) Hypochlorous acid ✅Explanation: Hypochlorous acid is effective yet material-friendly.
  • b) Peracetic acid
  • c) Hydrogen peroxide
  • d) Sodium hypochlorite

Which is a recommended method for applying disinfectants in cleanrooms?

  • a) Aerosol spraying
  • b) Dipping rags
  • c) Dry wipe + bucket
  • d) Presaturated wipes ✅
    Explanation: Presaturated wipes ensure consistent coverage and avoid oversaturation.